SAheart: South African Hearth Disease Data

In ElemStatLearn: Data Sets, Functions and Examples from the Book: "The Elements of Statistical Learning, Data Mining, Inference, and Prediction" by Trevor Hastie, Robert Tibshirani and Jerome Friedman

Description

A retrospective sample of males in a heart-disease high-risk region of the Western Cape, South Africa.

Usage

data(SAheart)

Format

A data frame with 462 observations on the following 10 variables.

sbp

systolic blood pressure

tobacco

cumulative tobacco (kg)

ldl

low density lipoprotein cholesterol

adiposity

a numeric vector

famhist

family history of heart disease, a factor with levels Absent Present

typea

type-A behavior

obesity

a numeric vector

alcohol

current alcohol consumption

age

age at onset

chd

response, coronary heart disease

Details

A retrospective sample of males in a heart-disease high-risk region of the Western Cape, South Africa. There are roughly two controls per case of CHD. Many of the CHD positive men have undergone blood pressure reduction treatment and other programs to reduce their risk factors after their CHD event. In some cases the measurements were made after these treatments. These data are taken from a larger dataset, described in Rousseauw et al, 1983, South African Medical Journal.

Source

Rousseauw, J., du Plessis, J., Benade, A., Jordaan, P., Kotze, J. and Ferreira, J. (1983). Coronary risk factor screening in three rural communities, South African Medical Journal 64: 430–436.

Examples

str(SAheart) 
summary(SAheart)

Example output

'data.frame':	462 obs. of  10 variables:
 $ sbp      : int  160 144 118 170 134 132 142 114 114 132 ...
 $ tobacco  : num  12 0.01 0.08 7.5 13.6 6.2 4.05 4.08 0 0 ...
 $ ldl      : num  5.73 4.41 3.48 6.41 3.5 6.47 3.38 4.59 3.83 5.8 ...
 $ adiposity: num  23.1 28.6 32.3 38 27.8 ...
 $ famhist  : Factor w/ 2 levels "Absent","Present": 2 1 2 2 2 2 1 2 2 2 ...
 $ typea    : int  49 55 52 51 60 62 59 62 49 69 ...
 $ obesity  : num  25.3 28.9 29.1 32 26 ...
 $ alcohol  : num  97.2 2.06 3.81 24.26 57.34 ...
 $ age      : int  52 63 46 58 49 45 38 58 29 53 ...
 $ chd      : int  1 1 0 1 1 0 0 1 0 1 ...
      sbp           tobacco             ldl           adiposity    
 Min.   :101.0   Min.   : 0.0000   Min.   : 0.980   Min.   : 6.74  
 1st Qu.:124.0   1st Qu.: 0.0525   1st Qu.: 3.283   1st Qu.:19.77  
 Median :134.0   Median : 2.0000   Median : 4.340   Median :26.11  
 Mean   :138.3   Mean   : 3.6356   Mean   : 4.740   Mean   :25.41  
 3rd Qu.:148.0   3rd Qu.: 5.5000   3rd Qu.: 5.790   3rd Qu.:31.23  
 Max.   :218.0   Max.   :31.2000   Max.   :15.330   Max.   :42.49  
    famhist        typea         obesity         alcohol            age       
 Absent :270   Min.   :13.0   Min.   :14.70   Min.   :  0.00   Min.   :15.00  
 Present:192   1st Qu.:47.0   1st Qu.:22.98   1st Qu.:  0.51   1st Qu.:31.00  
               Median :53.0   Median :25.80   Median :  7.51   Median :45.00  
               Mean   :53.1   Mean   :26.04   Mean   : 17.04   Mean   :42.82  
               3rd Qu.:60.0   3rd Qu.:28.50   3rd Qu.: 23.89   3rd Qu.:55.00  
               Max.   :78.0   Max.   :46.58   Max.   :147.19   Max.   :64.00  
      chd        
 Min.   :0.0000  
 1st Qu.:0.0000  
 Median :0.0000  
 Mean   :0.3463  
 3rd Qu.:1.0000  
 Max.   :1.0000  

ElemStatLearn documentation built on Aug. 12, 2019, 9:04 a.m.